By
eHow Relationships & Family Editor
Difficulty: Moderately Challenging
Step1
Get close to the person you want to betray. Find out what they're looking for in a relationship and fulfill their needs. Establish a bond and trust, whether you love them or not. The important thing is that the person loves you.
Step2
Find out what makes the person insecure. It could be looks, money, social background or even sexual confidence.
Step3
Begin dating someone whose strong suit is what your lover lacks the most. If your lover is overweight, have your affair with someone skinny. If he's unemployed, cheat on him with someone wealthy.
Step4
Reveal the affair at a moment when your lover is feeling weak. This will cause the greatest pain. You can choose to be "accidentally" discovered if you don't want to confess.
Step5
Try to avoid feeling guilt for accomplishing your betrayal. You have just done something cruel and unethical, so guilt is normal--but if you want to get good at breaking people's hearts, you have to get past the fact that you just devastated someone who adored you.